Energy saving tube



FIG. 1 is a top view of the energy saving tube showing my new invention;

FIG. 2 is a rear view thereof;

FIG. 3 is a first side view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a second side view thereof;

FIG. 7 is a top view of a second embodiment;

FIG. 8 is a rear view of FIG. 7;

FIG. 9 is a first side view of FIG. 7;

FIG. 10 is a front view of FIG. 7;

FIG. 11 is a bottom view of FIG. 7;

FIG. 12 is a second side view of FIG. 7;

FIG. 13 is a first side view of a third embodiment;

FIG. 14 is a bottom view of FIG. 13;

FIG. 15 is a front view of FIG. 13;

FIG. 16 is a second side view of FIG. 13;

FIG. 17 is a rear view of FIG. 13; and,

FIG. 18 is a top view of FIG. 13.

The ornamental design for an energy saving tube, as shown and described.